Driving wheel



' Jan. 8, 1924. 1,479,931

0. S. RUUD DRIVING WHEEL Filed Oct. 5. 1922 z uvenz dfr Patented Jan. 8,1924.

UNITED STATES OTTO SEVERIN R'U'UD, 0F RYIllliIOElbl', NEAR ROVER-U1)STATION, NOE'WAY.

DRIVING WHEEL.

Application filed October 3, 1922.

To all whom it may concern:

Be it known that I, O'r'ro SEVERIN 'RUUD, citizen of Norway, residing atRymoen, near Roverud Station, Norway, have invented certain new anduseful Improvements in Driving Wheels, of which the following is a specication.

The present invention relates to a driving wheel for motor sledges andthe like,

1 and is particularly characterized by the fact,

that the catching devices located at the periphery of the wheel arearranged in such a manner, that they will easily grip the road bed orsurface and thereby secure a firm hold. Owing to their form, theyordinarily will not slip on the road whereby losses of energy areavoided. V

The invention is shown in the accompanying drawing. in which:

Figure 1 shows the wheel in side elevation.

Figure 2 is an elevation of a single lug attached to the wheel.

The wheel consists of a disc 1 of steel or the like. The disc is formedwith a bore 2 for the shaft and with holes 3 for screws by means ofwhich the disc is fixed to a suitable nave. At the periphery of the disc1 a suitable number of traction increasing lugs 4 are arranged, whichare fastened to the disc by means of screws or rivets 5. The lugs aresuitably made from round-iron and are tapered or pointed towards theirouter ends, in order to grip into the road bed. In order to facilitatethe conducting ofthe lugs into and out of contact with the road and toprevent snow or the like from settling in the lugs, the same are fixedSerial no. 592,167.

to the disc 1 in such a manner, that each of the screws 5 holds a legfrom each of two adjacent lugs.

Each lug therefore comprises two spirals integrally connected at theirtraction points and the respective ends extending in differentdirections.

It will be easily understood, that these lugs 4 will grip the road bedin a firm hold, and that the same will be easily brought into and out ofengagement with the road, be cause no legs of the lugs are radiallyplaced upon the disc but all are located at a certain angle to theperiphery of the disc, so that one leg of the lugs will be carried at anoblique angle down into the road bed or surface, whereas the other legof the same lug during the continued rotation of the wheel will becarried up from the road surface at an oblique angle to the same,whereby breaking strains or the like will be reduced.

I claim In a driving wheel, the combination of a disc; lugs of circularcross section tapered at their traction points, each comprising twospirals integrally connected at their traction points and theirrespective free ends extending in different directions and to op positesides of said disc; and rivets for securing the respective ends of twoadjacent lugs together and to said disc.

In testimony whereof I afiix my signature.

OTTO SEVERIN RUUD. Witnesses:

AXEL LAHN, HANS HALL.

